124 CERITHIUM. 



usually five rows of nodules on the body whorl, outer lip fimbriated ; 

 white, with scattered or close chestnut dots or lines. 

 Length, l*5-2"5 in. 



Society ami Paumotus Is, 

 C. mutatum, Sowb.. is a synonym, and C. Adansonii, Reeve (fig. 

 27), not Brug. = C. tuberculiferum. Pease, is a narrow form,, 

 scarcely entitled to varietal designation. C. album, Hombr. et Jacq, 

 (fig. 26), is a form with the tubercles only slightly developed ; occa- 

 sionally the face of the body whorl is almost devoid of them. 



C. RuppELLii, Phil. PI. 20, figs. 28, 29. 



Much narrower than the jireceding species, the whorls somewhat 

 shouldered, the tubercles small and rounded ; whitish, spotted and 

 mai'bled with chestnut. Length, 1*75 in. 



Red Sea. 



Reeve's figure (fig. 28) is somewhat abnormal. C. Savignyi, 

 Fischer (ng. 29), and C. alucoides, Brocchi, are synonyms. This is 

 C. scabrldum, Philippi, but not of Reeve. 



C. Adenense, Sowerby. PI. 20, fig. 30. 



Shell narrow, longitudinally distantly ribbed, with spiral riblets, 

 two of which bear tubercles on crossing the ribs, tumid and tuber- 

 culated at the suture, then excavated ; white, sparingly marbled 

 with chestnut. Length, 22 mill. 



Aden. 



This may be a young specimen of the preceding species. 



C. ARMATUM, Phil. PI. 20, figs. 31, 32; PI. 21, fig. 33. 



Shell narrow, augur-shajjed, the whorls with a series of large 

 nodules next the suture, and three series of small papillae beneath 

 on the body whorl, a varix on the latter, and a few others near the 

 apex ; pale yellowish brown, spotted with chocolate. 

 Length, 1-25 in. 



Philip})ines. 



C. niffrojyunetatum, Sowb. (fig. 33), appears to me to be the 

 juvenile of this species. 



C. NoviE-HoLLANDi^, A. Ad. PI. 21, fig. 34 



Shell narrow, with flexuous longitudinal plaits, somewhat tumid 

 near the suture, merging below on the last whorl, into three spiral 

 sei'ies of tubercles ; aperture crenulated within ; whitish, variegated 

 M'ith chestnut on the lower half of each whorl. Length 1*5 in. 



Australia.. 



